ELECTRICITY ELECTRICITY GENERATION FROM GENERATION FROM

SPEED BREAKERSPEED BREAKER

Presented by – Ranjan Kumar Thakur

Reg no -1201341110

Branch –Electrical Engg

Sem -7th

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Content:

introduction objective methods of operation Rack-pinion arrangement method Piezoelectric method Conclusion

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Introduction:

Is anyone happy with current situation of electricity in India?

A step has been taken which will reduce the crises of electricity . For this the of use the road are considered to generate power?

So, electricity can be generated using vehicle’s weight such as potential energy as input.

In this method in general potential energy is converted into electrical energy.

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OBJECTIVE:

The objective for doing this step is to reduce the crises of electricity. why we only depend upon any thermal power plant ,or hydro power plants etc.

To generate power at low cost. As per 1megawatt generation, it impose Rs

10 million but from other source such as hydro and thermal ,the cost is 8 times higher.

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Methods for operation :

In general Simple energy conversion from Mechanical to Electrical is carried out.

To generate electricity using the vehicle weight (potential energy) as input

Here two methods are considered which has simple mechanisms

I. Rack- Pinion mechanism

II. Piezoelectric effect

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Rack- Pinion mechanism

Terminology :

Gear – it is used to transform rotational enegy to other output gear. Sprocket – it transfer rotary motion between two shaft. flywheel – it is used to store rotational energy. when there is requirement, it release the stored energy. rack and pinion – it is used to transform between rotary motion and translatary.

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Final arrangement:7

Construction of generator:

Initial experiments- DC motor as Generator

How is electricity generated?

Basic principle of generation of electricity.

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Results:

When 100 vehicles of each 1000 kg weight passes for one minute, by this process we can generate 1kw of energy.

Maximum gear losses– 3 to 5% Efficiency up to 95-96%

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Advantage :

Non polluting source of energy. Less installation and maintenance cost. Very economical and easy to install. It can be designed for heavy vehicles

so that more electricity can be generated.

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Drawback :

Selecting suitable generator. Selection of springs. For lighter load it is not efficient. extra cost on conversion of D.C to A.C

i.e. first storing in dc battery then invert to ac as per demand.

Achieving proper balance of speed and torque.

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using Piezoelectric materials

The word piezo is derived from a Greek word piezien which means squeeze or press.

when a mechanical stress is applied to material (crystal or some ceramics ) by the property of piezoelectricity, it produces a potential difference across it.

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Principle:-

When mechanical stress is applied to a crystal ,the potential difference is developed across it .

The potential difference that is generated across the terminal of crystal will be used for the charging of battery.

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Results:-

The output voltage is directly proportional to the applied mechanical stress i.e. in general weight of vehicle. analytical investigation gives that when a 1c.m^3 of piezo crystal on which 2KN of load is applied , the output voltage will be about 12.5KV.Efficiency is 65-75%It is demonstrated that a 40MAH battery can be charged within a half an hour.

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Advantage:-

Very light weight and small in size. Free from pollution Ultra low noise Cost effective it is so because the cost

of one crystal of (50*35*2)mm is RS 24-25.

Wide temperature range.

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Drawback

It can sustain maximum up to 30Mpa of applied pressure after which it may break.

It is not for bulky loaded vehicle. It generates low power.

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Future scope :

Such can be designed for heavy vehicles, thus increasing input stress and ultimately more output voltage .

More suitable and compact mechanisms to enhance efficiency.

it can be used in every car parking , footstep , in shoes, bus stand and many more places etc.

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Conclusion:- The existing source of energy such as

coal, oil etc. is not sufficient for ever increasing the demand of energy.

The crises of electricity will be somehow reduced and dependency on power plants also diminished.

This is one path of exploring the possibility of energy.

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Reference:-

www.wiki.com

www.ijert.com

www.ijesit.com

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